EP 0301641 A1 19890201 - Master disc and method of manufacturing a matrix.
Title (en)
Master disc and method of manufacturing a matrix.
Title (de)
Originalscheibe und Verfahren zur Herstellung einer Schablone.
Title (fr)
Disque original et procédé de fabrication d'une matrice.
Publication
Application
Priority
NL 8701736 A 19870723
Abstract (en)
The master disc contains a substrate plate which is preferably provided with an optically detectable guide track and a recording layer of polysulphone such as poly(1-butene sulphone) to which, preferably, a colorant is added and in which an optically readable information track is provided by paterned exposure, a pit or groove being formed in the polysulphone layer. A matrix is formed by applying a metal layer to the polysulphone layer by means of an electroless deposition process and then, applying a further metal layer by means of an electrodeposition process or applying a curable synthetic resin layer together with a metal disc, after which the synthetic resin is made to cure.
IPC 1-7
IPC 8 full level
G11B 3/70 (2006.01); G11B 7/245 (2006.01); G11B 7/2533 (2013.01); G11B 7/26 (2006.01)
CPC (source: EP KR US)
G11B 7/245 (2013.01 - EP US); G11B 7/26 (2013.01 - KR); G11B 7/261 (2013.01 - EP US); Y10S 430/146 (2013.01 - EP US); Y10S 430/165 (2013.01 - EP US)
Citation (search report)
- [YD] US 4474650 A 19841002 - DE LAAT ANTONIUS W M [NL]
- [YD] EP 0224312 A1 19870603 - PHILIPS NV [NL]
- [Y] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 25, no. 10, March 1983, pages 5098-5099, New York, US; K.Y. AHN et al.: "Improved polymer films for optical recording"
- [Y] PROCEEDINGS OF SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, Arlington, 6th-10th June 1983, vol. 420, pages 336-343, SPIE, Bellingham, Washington, US; G.E. JOHNSON et al.: "Laser marking of ablative organic dye-in-polymer films"
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 298 (P-505)[2354], 9th October 1986, page 29 P 505; & JP-A-61 113 142 (HITACHI LTD) 31-05-1986
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 5, no. 118 (P-73)[790], 30th July 1981, page 23 P 73; & JP-A-56 58 145 (TOKYO SHIBAURA DENKI K.K.) 21-05-1981
- [Y] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 256 (P-493)[2312], 2nd September 1986; & JP-A-61 82 346 (FUJITSU LTD) 25-04-1986
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0301641 A1 19890201; JP S6453362 A 19890301; KR 890002847 A 19890411; US 5004660 A 19910402
DOCDB simple family (application)
EP 88201535 A 19880715; JP 18045288 A 19880721; KR 880009175 A 19880722; US 42538289 A 19891017